/// <summary>
/// Creates and returns set by deserialization
/// </summary>
/// <param name="reader">general reader</param>
/// <param name="itemReader">item reader</param>
/// <param name="concurrencyLevel">the concurrency level (all values less than 1024 will be assumed to be 1024)</param>
public static ConcurrentBigSet <TItem> Deserialize(
BinaryReader reader,
Func <TItem> itemReader,
int concurrencyLevel = DefaultConcurrencyLevel)
{
var count = reader.ReadInt32();
var nodeLength = reader.ReadInt32();
var itemsPerBufferBitWidth = reader.ReadInt32();
var capacity = Math.Max(MinConcurrencyLevel, Math.Max(nodeLength, concurrencyLevel));
var items = new BigBuffer <TItem>(itemsPerBufferBitWidth);
items.Initialize(capacity);
var nodes = new BigBuffer <Node>(NodesPerEntryBufferBitWidth);
nodes.Initialize(capacity);
var itemsAccessor = items.GetAccessor();
var nodesAccessor = nodes.GetAccessor();
List <int> freeNodes = new List <int>();
for (int i = 0; i < nodeLength; i++)
{
var hashCode = reader.ReadInt32();
if (hashCode != Node.UnusedHashCode)
{
var next = reader.ReadInt32();
var item = itemReader();
nodesAccessor[i] = new Node(hashCode, next);
itemsAccessor[i] = item;
}
else
{
freeNodes.Add(i);
}
}
var buckets = Buckets.Deserialize(reader);
var result = new ConcurrentBigSet <TItem>(
concurrencyLevel,
items,
nodes,
buckets,
nodeLength);
result.m_count = count;
// distribute free nodes
var accessors = result.m_accessors;
foreach (var i in freeNodes)
{
var lockNo = result.GetLockNo(i);
result.AddFreeNode(lockNo, i, ref accessors);
}
return(result);
}